Looking for a suggestion

I've been using Whitespace by Brian Gardner since I started my blog 5 years ago, but it's time to update things.

I recently updated the logo, and I really like it. I'd like to find a theme that echoes that mechanical-drawing/blueprint feel of the logo. I basically write about anything that strikes my fancy, although there will be an emphasis on RV life. I don't know that I need a background image. I'm looking for some blue elements or accents that would add some color to things. Any suggestions? I think I'd prefer three columns, and not quite as much whitespace on the sides as I have now.

If someone wanted a project, and could add color elements (lines or boxes, etc) to Whitespace, that would probably work pretty well, too.